/* raysan-ui · components.css
   Buttons, chips, cards, text fields, top app bar and the theme toggle.
   Load after base.css. Every value comes from a token. */

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  height: 40px; padding: 0 24px; border: 0; border-radius: var(--shape-full);
  font: var(--label-l); text-decoration: none; cursor: pointer; white-space: nowrap;
  transition: background-color var(--dur-s) var(--ease-std), box-shadow var(--dur-s) var(--ease-std);
}
.btn .ms { font-size: 18px; margin-left: -8px; }
.btn.trail .ms { margin-left: 0; margin-right: -8px; }
.btn-filled { background: var(--md-primary); color: var(--md-on-primary); }
.btn-tonal { background: var(--md-secondary-container); color: var(--md-on-secondary-container); }
.btn-outlined { background: transparent; color: var(--md-primary); border: 1px solid var(--md-outline); }
.btn-text { background: transparent; color: var(--md-primary); padding: 0 12px; }
.btn-lg { height: 56px; padding: 0 28px; font: var(--title-m); border-radius: var(--shape-l); }
.btn:disabled, .btn[aria-disabled="true"] { opacity: .38; cursor: not-allowed; pointer-events: none; }

/* Icon button (circular, 40px) */
.icon-btn {
  display: inline-grid; place-items: center; width: 40px; height: 40px; padding: 0;
  border: 0; border-radius: var(--shape-full); background: transparent; color: var(--md-on-surface);
  cursor: pointer; transition: background-color var(--dur-s);
}
.icon-btn:hover { background: var(--md-surface-container-high); }
.icon-btn .ms { font-size: 22px; }
@media (hover: none) { .icon-btn:hover { background: transparent; } }

/* ---------- Chips ---------- */
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
  display: inline-flex; align-items: center; gap: 8px; height: 32px; padding: 0 14px;
  border: 1px solid var(--rd-green-line); border-radius: var(--shape-full);
  background: var(--rd-chip-fill); color: var(--rd-chip-ink); font: 700 .875rem/1 var(--md-font);
}
.chip .ms { font-size: 18px; color: currentColor; margin-left: -4px; }
.chip-neutral { border-color: var(--md-outline-variant); background: transparent; color: var(--md-on-surface-variant); }

/* ---------- Cards ---------- */
.card {
  display: flex; flex-direction: column; gap: 12px; padding: 24px;
  border: 1px solid var(--md-outline-variant); border-radius: var(--shape-xl);
  background: var(--md-surface); color: var(--md-on-surface); text-decoration: none;
}
.card-filled { background: var(--md-surface-container); border-color: transparent; }
.card h3 { font: 700 1.625rem/1.2 var(--md-font); }
.card p { font: var(--body-m); font-size: .9375rem; line-height: 1.4rem; color: var(--md-on-surface-variant); }
.card .supporting { font: 700 .8125rem/1 var(--md-font); letter-spacing: .02em; color: var(--rd-chip-ink); }
.card .chips { margin-top: auto; padding-top: 8px; }
.card .card-actions { display: flex; justify-content: flex-end; gap: 8px; margin-top: 4px; }
.card-icon {
  width: 48px; height: 48px; border-radius: 16px; display: grid; place-items: center;
  background: var(--md-secondary-container); color: var(--md-on-secondary-container);
}
.card-icon.t { background: var(--md-tertiary-container); color: var(--md-on-tertiary-container); }
.card-icon.p { background: var(--md-primary-container); color: var(--md-on-primary-container); }
a.card { transition: border-color var(--dur-s); }
a.card:hover { border-color: var(--md-outline); }

/* ---------- Brand icons (mid to high importance) ----------
   Coral-to-peach tile with flat two-tone white shapes (50% back, 100% front).
   Use the drawn SVGs in icons/brand/ as <img class="brand-icon">.
   No custom drawing yet? .brand-icon-ms puts a filled Material Symbol on the tile. */
.brand-icon { display: block; flex: none; width: 48px; height: 48px; border-radius: 20.8%; }
.brand-icon.sm { width: 32px; height: 32px; }
.brand-icon.lg { width: 64px; height: 64px; }
.brand-icon.xl { width: 96px; height: 96px; }
.brand-icon-ms { display: grid; place-items: center; background: var(--rd-brand-bar); color: #fff; }
.brand-icon-ms .ms { font-size: 28px; font-variation-settings: "FILL" 1, "wght" 500, "GRAD" 0, "opsz" 24; }
.brand-icon-ms.sm .ms { font-size: 20px; }
.brand-icon-ms.lg .ms { font-size: 38px; }
.brand-icon-ms.xl .ms { font-size: 56px; }

/* ---------- Text fields (outlined) ---------- */
.field { display: grid; gap: 6px; }
.field label { font: var(--label-l); color: var(--md-on-surface-variant); }
.field input, .field select, .field textarea {
  min-height: 48px; padding: 12px 16px; border: 1px solid var(--md-outline); border-radius: var(--shape-s);
  background: var(--md-surface); color: var(--md-on-surface); font: var(--body-l);
}
.field textarea { min-height: 96px; resize: vertical; }
.field input:focus-visible, .field select:focus-visible, .field textarea:focus-visible {
  outline: 2px solid var(--md-primary); outline-offset: -1px; border-color: var(--md-primary);
}
.field .hint { font: var(--body-m); color: var(--md-on-surface-variant); }
.field.error input, .field.error select, .field.error textarea { border-color: var(--md-error); }
.field.error .hint { color: var(--md-error); }

/* ---------- Top app bar ---------- */
.top-app-bar {
  position: sticky; top: 0; z-index: 10; background: var(--md-surface);
  border-bottom: 1px solid var(--md-outline-variant);
  transition: background-color var(--dur-m) var(--ease-std);
}
.top-app-bar.scrolled { background: var(--md-surface-container); }
.top-app-bar.scrolled .brand-mark::after { background: var(--md-surface-container); }

/* ---------- Hero gradient (animated, as on raysandesigns.com) ----------
   The gradient is 4x wider than its box and drifts over 15s, so only one
   stretch shows at a time: peachy coral, then sky and teal, then back.
   Use on hero bands, case study covers, logo tiles, the contact card. */
.hero-gradient {
  background: var(--rd-hero-grad); background-size: 400% 400%;
  animation: rd-gradient-shift 15s ease infinite;
}

/* Reading progress: hero-gradient line that grows as the page scrolls (js/scroll-progress.js) */
.scroll-progress {
  position: absolute; left: 0; right: 0; bottom: -1px; height: 5px; z-index: 2; pointer-events: none;
  background: var(--rd-hero-grad); background-size: 400% 400%;
  animation: rd-gradient-shift 15s ease infinite;
  transform: scaleX(var(--progress, 0)); transform-origin: left center; will-change: transform;
}
@keyframes rd-gradient-shift { 0% { background-position: 0% 50%; } 50% { background-position: 100% 50%; } 100% { background-position: 0% 50%; } }
.top-app-bar .wrap { height: 64px; display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.brand { display: inline-flex; align-items: center; gap: 12px; color: var(--md-on-surface); text-decoration: none; font: var(--title-l); }
.brand-mark { width: 32px; height: 32px; border-radius: var(--shape-s); background: var(--rd-brand-bar); position: relative; flex: none; }
.brand-mark::after {
  content: ""; position: absolute; left: 0; bottom: 0; width: 60%; height: 62%;
  background: var(--md-surface); border-top-right-radius: 6px;
  transition: background-color var(--dur-m);
}

/* ---------- Theme toggle (rendered by <theme-toggle>) ---------- */
theme-toggle { display: inline-flex; }
.theme-toggle {
  display: inline-grid; place-items: center; width: 40px; height: 40px; padding: 0;
  border: 0; border-radius: var(--shape-full); background: transparent; color: var(--md-on-surface);
  cursor: pointer; transition: background-color var(--dur-s);
}
.theme-toggle:hover { background: var(--md-surface-container-high); }
.theme-toggle .ms { font-size: 22px; }
@media (hover: none) { .theme-toggle:hover { background: transparent; } }